🇩🇪 EGroupware

Kaiserslautern, DE
https://egroupware.org

Open-source enterprise groupware

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Offerings

Communication Infrastructure → Collaboration Platforms

Price: Free (community)
Free tier: Yes — Open source community edition
API: Yes — REST API, CalDAV/CardDAV, WebDAV
Docs: Moderate
Open-Source GDPR Groupware German
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Communication Infrastructure → Office Suites

Price: Free (community)
Free tier: Yes — Open source with Collabora integration
API: Yes — REST API
Docs: Moderate
Open-Source German Groupware Collabora
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Communication Infrastructure → Shared Calendars

Price: Free (community)
Free tier: Yes — Open source with CalDAV
API: Yes — CalDAV, REST API
Docs: Moderate
Open-Source CalDAV German Groupware
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Content Infrastructure → Content Versioning

Price: Free (community)
Free tier: Yes — Open-source community edition
API: Yes — REST API, CalDAV, CardDAV
Docs: Moderate
Open-Source Groupware Collaboration PHP
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Local & On-Prem Infrastructure → On-Prem Application Hosting

Price: Free (CE)
Free tier: Yes —
API: Yes —
Docs: Moderate
Groupware CRM On-Prem Open-Source GDPR
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